BALTIMORE — David Price won his eighth straight decision, Hanley Ramirez homered and the Boston Red Sox completed a four-game sweep of the sinking Baltimore Orioles with a 5-3 victory on Thursday night.

Price (17-8) gave up three runs and six hits in seven inning, walking two and striking out five. The Red Sox have won each of the left-hander’s last nine starts since Aug. 7.

Baltimore trailed 3-0 before Trey Mancini, starting his second major league game, hit a tying three-run homer in the third inning. It was his second home run in six at-bats.

Boston used a walk, a wild pitch and Andrew Benintendi’s two-out RBI single off Vance Worley (2-2) to move back in front in the fifth.

Ramirez hit his 29th homer in the seventh to make it 5-3 and send the Red Sox to their eighth straight win over an AL East foe, their longest such run since 1990.

Boston got a first-inning RBI single from Hanley Ramirez and added two runs in the second, the last on a bases-loaded walk to David Ortiz that ended Tillman’s outing.

A here-we-go-again pall engulfed Orioles fans in the crowd of 26,788, but their spirits were rekindled when Mancini lined a 2-2 pitch into the left-field seats. The standing ovation continued until Price threw his next pitch.